Originally Posted by
sierrabob
I just thought I would throw in my take on this discussion. Apologies if I'm stating the obvious or misreading the information, but it seems based on the Amazon post that you were attempting to transmit cadence simultaneously to more than one BLE receiver. This should not be possible with the BLE spec. You can only pair one sensor with one BLE app at a time. ANT+ allows pairing of multiple receivers with a single sensor. So you can run multiple Garmin computers simultaneously with one set of BLE/ANT+ sensors/transmitters, but you can only pair one app at a time on your BLE smartphone. Multiple apps on the same device or even two different BLE devices receiving a signal from the same BLE sensor will not work. It's a design limitation of the Bluetooth 4.0 spec.
Originally Posted by
sierrabob
Please understand that I'm only discussing the limitaton of pairing a Bluetooth LE sensor to a single receiving device. I'm not referring to bridging ANT+ signals or rebroadcast of a Bluetooth signal to another device.
No, that's incorrect. I was trying to use two sensors - one configured as a cadence sensor and the other as a speed sensor. Both are allowed, should be functional, and that's how the sensor was promoted by the manufacturer. One BLE receiver only with two sensors. Both sensors transmit ANT+ simultaneously so it is possible to have one BLE receiver and one ANT+ receiver at the same time. The ANT+ receiver was there just to verify the sensor operation. Note that the result was the same with or without the ANT+ receiver.
FWIW, this set up works just fine if you replace these sensors with Wahoo sensors (where possible). Wahoo and VC use the same Nordic Semiconductor chip. From that, I think it's fair to conclude that it's the VC implementation that is bad. I wish they would fix it. I find the idea of one sensor that can be reprogrammed for hub or crank to be very attractive.
J.